Idle Learn Procedure
The following idle learn procedure must be performed whenever one or more of the actions listed below are taken;
Replacement of new ECM
Replacement of new throttle body (MTIA, ETC)
Replacement of new IAC valve
Cleaning of carbon deposit on the throttle body
Power disconnection (battery cable, ECM fuse, etc.) (Delphi ECM only)
1. Turn the ignition ON.
2. Reset the adaptation values using the scan tool. (MTIA, ETC only)
3. Turn the ignition OFF for 15 seconds.
4. Turn the ignition ON for 5 seconds.
5. Turn the ignition OFF for 15 seconds. (For Siemens D160 ECM with ETC system, turn the ignition OFF for 35 seconds.)
6. Start the engine in park/neutral.
7. If the vehicle is equipped with an automatic transmission, apply the parking brake. While pressing the brake pedal, place the transmission in D (Drive) for 1 second and return to P (Park). (Siemens ECM only).
8. Allow the engine to run until the engine coolant is above 85°C (185°F).
9. Turn the A/C ON for 10 seconds, if equipped.
10. If the vehicle is equipped with an automatic transmission, apply the parking brake. While pressing the brake pedal, place the transmission in D (drive) for 10 seconds.
11. Turn the A/C OFF for 10 seconds, if equipped.
12. If the vehicle is equipped with an automatic transmission, while pressing the brake pedal, place the transmission in park/neutral.
13. Turn the ignition OFF. The idle learn procedure is complete.
14. Wait for 15 seconds before restarting the engine (Siemens ECM only). (For Siemens D160 ECM with ETC system, turn the ignition OFF for 35 seconds.)